package com.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.reggie.common.R;
import com.reggie.entity.Employee;
import com.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    /*
     * 员工登录
     * request:将返回的结果存到session
     * */
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2.根据用户提交的username查询数据库
        QueryWrapper<Employee> employeeQueryWrapper = new QueryWrapper<>();
        employeeQueryWrapper.eq("username",employee.getUsername());
        Employee emp = employeeService.getOne(employeeQueryWrapper);
        // 3.如果没有查询到则返回失败
        if (emp==null){
            return R.error("登录失败");
        }
        //4.密码对比，如果不一致，返回登录失败结果
        if (!password.equals(emp.getPassword())){
            return R.error("登录失败");
        }
        // 5.查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus()==0){
            return R.error("账号已经禁用");
        }
        //6.登录成功，将员工id存入session并返回成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }
    /*
    * 员工退出
    * */
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        //清除session中员工保存的当前登录用户的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /*
    * 新增员工
    * */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码，md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户
        Long empId = (Long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);
        employeeService.save(employee);
        /*try {

        } catch (Exception e) {
            return R.error("新增员工失败");
        }*/
        return R.success("新增员工成功");
    }

    /*
    * 员工信息分页查询
    * */
    @GetMapping("/page")
    public R<Page> page(    int page,int pageSize,String name){
        log.info("page={},pagesize={},name={}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo=new Page(page,pageSize);
        // //构造条件构造器
        // QueryWrapper<Employee> queryWrapper = new QueryWrapper<>();
        // //添加过滤条件
        // queryWrapper.like(StringUtils.isNotEmpty(name),"name",name);
        // //排序条件
        // queryWrapper.orderByDesc("update_time");

        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }

    /*
    * 根据id修改员工信息
    *
    * */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info("修改员工的信息：{}",employee.toString());
        //employee.setUpdateTime(LocalDateTime.now());
        Long employee1 = (Long) request.getSession().getAttribute("employee");
        //employee.setUpdateUser(employee1);
        if (employee.getId()==employee1){
            return R.error("无法修改自己的状态");
        }
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /*
    *根据id查询员工信息
    * */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据 id查询员工信息");
        Employee employee = employeeService.getById(id);
        if (employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工");
    }
}
